Baby stroller

Abstract

The stroller comprises a stroller frame with an unfolded state and a folded state, the stroller frame comprises a front support, a rear support and a push rod, two of the front support, the rear support and the push rod are rotationally connected, the third one of the front support, the rear support and the push rod is rotationally connected with any one of the front support and the rear support, and the other one of the front support and the rear support is rotationally connected with the push rod. Or the three are coaxially and rotatably connected; the stroller comprises a seat and a linkage mechanism, the seat is arranged on the linkage mechanism, the linkage mechanism is connected with the push rod so that the stroller can be folded, and when the push rod rotates, the seat is driven to move backwards in the direction close to the front support. The stroller is convenient to fold and operate, compact in structure after being folded and small in size.

Description

Technical Field

[0001] The present invention relates to the technical field of children's products, and in particular to a children's stroller. Background Art

[0002] Strollers are generally used when taking children out. To facilitate carrying and storing the stroller, the stroller is generally foldable. A stroller generally includes a stroller frame and a seat mechanism arranged on the stroller frame. When the structure of the stroller frame is different, or the arrangement of the seat mechanism on the stroller frame is different, the folding operation method of the stroller and the volume of the structure after folding are also different. In the prior art, some strollers have the problems of inconvenient folding operation, large volume after folding, and inconvenient to carry and store. Summary of the invention

[0003] The purpose of the present invention is to provide a child stroller which is easy to fold and has a small volume after folding, in view of the deficiencies in the prior art.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] A child stroller comprises a stroller frame with an unfolded state and a folded state, the stroller frame comprises a front bracket, a rear bracket and a push rod, two of the front bracket, the rear bracket and the push rod are rotatably connected, the third is rotatably connected to any of the two, or the three are coaxially rotatably connected; the child stroller comprises a seat and a linkage mechanism, the seat is arranged on the linkage mechanism, and the linkage mechanism is connected to the push rod, so that when the child stroller is folded and the push rod is rotated, the seat is driven to move backward and in a direction close to the front bracket.

[0006] In some embodiments, the linkage mechanism includes a push rod link, a front support link and a seat link; one end of the push rod link is rotatably connected to the push rod; the front support link is rotatably connected to the front support, and the seat is rotatably connected to the front support link; one end of the seat link is rotatably connected to the seat, and the other end of the seat link is rotatably connected to the push rod link;

[0007] In the unfolded state, the seat is supported by the front support link and the seat link;

[0008] In the folded state, the push rod folds toward the rear support and drives the push rod connecting rod to move downward, and the push rod connecting rod drives the seat to flip backward and fold toward the front support through the seat connecting rod, and the seat drives the front support connecting rod to fold toward the front support.

[0009] In some embodiments, the front support link includes a first rod and a second rod, the first rod and one end of the second rod intersect, and the seat is rotatably disposed on the second rod;

[0010] In the unfolded state, the extension direction of the second rod body intersects with the extension direction of the front bracket, and the second rod body, the front bracket and the seat form a triangular structure;

[0011] In the folded state, the second rod body rotates backward and is folded close to the front bracket; the seat flips backward and is folded close to the front bracket;

[0012] The other end of the push rod connecting rod is directly or indirectly rotatably arranged on the front bracket connecting rod;

[0013] The first rod and / or the second rod are rotatably connected to the front bracket, the other end of the first rod is directly or indirectly rotatably connected to the push rod connecting rod, and the other end of the second rod is rotatably connected to the front part of the seat;

[0014] The first rod body extends in a front-to-rear direction as a whole, and the second rod body extends in a top-to-bottom direction as a whole.

[0015] In some embodiments, in the unfolded state, the extension direction of the push rod link intersects with the extension direction of the seat link, and together with the seat, forms a triangular structure;

[0016] The front support link and the rotational position of the seat are relatively arranged at a position close to the front end of the seat, and the seat link and the rotational position of the seat are relatively arranged at a position close to the rear end of the seat.

[0017] In some embodiments, the linkage mechanism further includes a rear support link, one end of the rear support link is rotatably connected to the rear support, the other end of the push rod link is rotatably connected to the other end of the rear support link, and the front support link is rotatably connected to the rear support link;

[0018] On the rear support link, the rotational connection between the push rod link and the rear support link is located in front of the rotational connection between the front support link and the rear support link;

[0019] The cart frame also includes a basket rod and a basket connecting rod, wherein the basket rod is rotatably connected to the rear bracket connecting rod, one end of the basket connecting rod is rotatably connected to the basket rod, and the other end is rotatably connected to the rear bracket.

[0020] In some embodiments, the stroller further includes a seat mechanism and a backrest, the seat mechanism includes the seat, and the backrest is rotatably arranged relative to the seat; when the seat of the stroller is folded and moves backward, the connection between the seat and the backrest moves downward, and the backrest is a split structure, which includes a plurality of unit backrests, and the plurality of unit backrests are sequentially arranged along the height direction of the backrest, and adjacent ends of two adjacent unit backrests are rotatably or slidably connected.

[0021] In some embodiments, the cart frame further includes a push handle, wherein the push handle is rotatably connected to the push rod;

[0022] The child stroller further comprises a first locking mechanism, which is disposed on the stroller frame to lock the stroller frame in an unfolded state;

[0023] The child stroller further comprises a third linkage mechanism, which is respectively connected or matched with the push handle and the first locking mechanism, so as to drive the first locking mechanism to unlock from a locked state when the push handle rotates and approaches the push rod.

[0024] In some embodiments, the first locking mechanism comprises a first locking member movably disposed on one of the front bracket or the rear bracket and the push rod and a first locking slot disposed on the other, wherein the first locking member is detachably disposed in the first locking slot;

[0025] The third linkage mechanism comprises a first traction rope, one end of which is arranged on the first locking member, and the other end of which is arranged on the push handle;

[0026] The other end of the first traction rope is movably arranged on the push handle;

[0027] The third linkage mechanism also includes a fixed column, the other end of the first traction rope is fixedly arranged on the fixed column, and the push handle is provided with a first limiting groove, the first limiting groove extends along the circumferential direction of the push handle relative to the push rod, the first limiting groove has two ends arranged opposite to each other, and the fixed column is arranged in the first limiting groove; when the cart frame is in an unfolded state or a folded state, there is a gap between the fixed column and at least one end of the first limiting groove; when the push handle is rotated at an angle relative to the push rod when folded or unfolded, one end of the first limiting groove is abutted against the fixed column so that when the push handle rotates, the fixed column is driven to rotate synchronously in the same direction.

[0028] In some embodiments, a second limiting groove is provided on the push rod, and the fixing column is movably disposed in the second limiting groove;

[0029] When the cart frame is in an unfolded state or a folded state, the fixing column is respectively abutted against one of the two ends of the first limiting groove and one of the two ends of the second limiting groove, and the end of the first limiting groove and the end of the second limiting groove are respectively located on opposite sides of the fixing column.

[0030] In some embodiments, the child stroller further comprises a second locking mechanism, which is disposed between the push rod and the push handle to lock the relative positions of the two.

[0031] The second locking mechanism comprises a second locking member movably disposed on one of the push rod and the push handle and a second locking groove disposed on the other, wherein the second locking member is detachably disposed in the second locking groove;

[0032] And / or, two second locking grooves are provided on the push rod or the push handle along the circumferential direction of rotation of the push handle; when the child stroller is in the unfolded state, the second locking member is positioned in one of the second locking grooves; when the child stroller is in the folded state, the second locking member is positioned in the other of the second locking grooves.

[0033] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: when the child stroller of the present invention is folded, when the push rod rotates, the seat can be driven by the linkage mechanism to move backward and close to the front bracket, so that the folding operation of the child stroller is convenient, and the child stroller has a compact structure and a small size after being folded, so that the child stroller is easy to carry and store. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Attached Figure 1 FIG1 is a perspective view of the baby stroller of this embodiment in the unfolded state (viewed from the back to the front);

[0035] Attached Figure 2 The second three-dimensional schematic diagram of the child stroller of this embodiment in the unfolded state (seen from the front to the back);

[0036] Attached Figure 3 is a schematic side view of the child stroller of this embodiment in an unfolded state;

[0037] Attached Figure 4 This is an exploded schematic diagram of the push rod and the push handle of the child stroller of this embodiment;

[0038] Attached Figure 5 This is a schematic diagram of the structure of a portion of the push handle in the child stroller of this embodiment;

[0039] Attached Figure 61 is a cross-sectional schematic diagram of the push rod and the push handle of the child stroller of this embodiment in the unfolded state (the first locking mechanism and the second locking mechanism are both in the locked state);

[0040] Attached Figure 7 1 is a cross-sectional schematic diagram of the push rod and the push handle of the child stroller of this embodiment in the unfolded state (the first locking mechanism is in the locked state, and the second locking mechanism is in the unlocked state);

[0041] Attached Figure 8 It is a cross-sectional schematic diagram of the push rod and the push handle of the child stroller of this embodiment in the folded state (the first locking mechanism is in the unlocked state, and the second locking mechanism is in the locked state);

[0042] Attached Fig. 9 It is a cross-sectional schematic diagram of the push rod and the push handle of the child stroller of this embodiment in the folded state (the first locking mechanism and the second locking mechanism are both in the unlocked state);

[0043] Attached Fig.10 is a three-dimensional schematic diagram of the child stroller of this embodiment during the folding process (after the push handle is rotated and the push rod is brought close to each other);

[0044] Attached Fig.11 1 is a side view schematic diagram of the child stroller of this embodiment during the folding process (after the push handle is rotated and the push rod is brought close to each other);

[0045] Attached Fig.12 is a three-dimensional schematic diagram of the child stroller of this embodiment during the folding process (the push rod rotates);

[0046] Attached Fig.13 is a side view schematic diagram of the child stroller of this embodiment during the folding process (the push rod rotates);

[0047] Attached Fig.14 is a three-dimensional schematic diagram of the child stroller of this embodiment in a folded state;

[0048] Attached Fig.15 is a schematic side view of the child stroller of this embodiment in a folded state;

[0049] Attached Fig.16 FIG. 4 is a cross-sectional schematic diagram of the child stroller of this embodiment in a folded state.

[0050] Among them: 11, front bracket; 12, rear bracket; 121, joint; 122, first locking groove; 13, push rod; 131, second locking groove; 132, second limiting groove; 14, front bracket connecting rod; 141, first rod body; 142, second rod body; 15, rear bracket connecting rod; 16, push rod connecting rod; 17, basket rod; 18, basket connecting rod; 19, push handle; 191, first limiting groove; 192, guide column; 21, seat; 22, backrest; 31, seat connecting rod; 401, first axis; 402, second axis; 403, third axis; 404, fourth axis; 405, fifth axis; 406, sixth axis; 407, seventh axis; 408, eighth axis; 409, ninth axis; 410, tenth axis; 411, eleventh axis; 412, twelfth axis; 5, first locking member; 6, second locking member; 61, locking portion; 62, guide groove; 71, first traction cable; 72, fixing column; 81, unlocking button; 82, second traction cable; 91, front wheel assembly; 92, rear wheel assembly. DETAILED DESCRIPTION

[0051] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0052] In the following description, the directions such as "front", "back", "left", "right", "up", and "down" are all based on Figure 3 , the left side direction in the figure is "front", the right side direction is "back", the upper side direction is "up", the lower side direction is "down", and the directions perpendicular to the paper plane in the figure are "left" and "right". The definitions of the above directions are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present invention.

[0053] like Figure 1 to Figure 3 As shown, the child stroller of the present invention comprises a stroller frame having an unfolded state and a folded state, a seat mechanism, a front wheel assembly 91 arranged at the bottom front portion of the stroller frame, and a rear wheel assembly 92 arranged at the bottom rear portion of the stroller frame.

[0054] The cart frame includes a front bracket 11, a rear bracket 12 and a push rod 13. The front wheel assembly 91 is arranged at the lower part of the front bracket 11, and the rear wheel assembly 92 is arranged at the lower part of the rear bracket 12. Two of the front bracket 11, the rear bracket 12 and the push rod 13 are rotatably connected, the third one is rotatably connected to any one of the two, or the three are coaxially rotatably connected.

[0055] Specifically, Figure 1 to Figure 3As shown, the upper portion of the rear bracket 12 has a joint 121 , the upper portion of the front bracket 11 is rotatably connected to the joint 121 via a first shaft 401 , and the lower portion of the push rod 13 is rotatably connected to the joint 121 via a second shaft 402 .

[0056] The first shaft 401 and the second shaft 402 may be located at the two ends of the joint 121, respectively, and the first shaft 401 is located below the second shaft 402. Alternatively, the first shaft 401 and the second shaft 402 may be coaxially arranged, and both are located in the middle of the joint 121. Alternatively, the first shaft 401 may be located in the middle of the joint 121, and the second shaft 402 may be located at the upper end of the joint 121. Alternatively, the first shaft 401 may be located at the lower part of the joint 121, and the second shaft 402 may be located in the middle of the joint 121.

[0057] The seat mechanism includes a seat 21 and a backrest 22. The backrest 22 can be rotatably arranged relative to the seat 21. Specifically, the lower part of the backrest 22 can be directly rotatably connected to the rear part of the seat 21, or the backrest 22 can be rotatably arranged behind the seat 21 through a cloth cover. When the child stroller is folded, the seat 21 and the backrest 22 are rotated in the same or different directions to be close to the stroller frame.

[0058] The child stroller further includes a linkage mechanism, on which the seat 21 is disposed, which is connected to the push rod 13, so that when the push rod 13 rotates during the folding or unfolding of the child stroller, the seat 21 can be synchronously moved closer to or away from the stroller frame. In this embodiment, when the child stroller is folded, the push rod 13 rotates to cause the seat 21 to flip backward and move in a direction closer to the front support 11.

[0059] like Figure 1 to Figure 3 As shown, the linkage mechanism includes a front support link 14, a push rod link 16 and a seat link 31. One end of the push rod link 16 is rotatably connected to the push rod 13, and the other end of the push rod link 16 is directly or indirectly rotatably arranged on the front support link 14. The front support link 14 is rotatably connected to the front support 11, and the seat 21 is rotatably connected to the front support link 11. One end of the seat link 31 is rotatably connected to the seat 21, and the other end of the seat link 31 is rotatably connected to the push rod link 14. When the push rod 13 rotates, the push rod link 16 is driven to move, and the push rod link 16 is linked to the seat link 31, and the seat 21 is driven to rotate through the seat link 31. When the seat rotates, the front support link 14 is driven to rotate relative to the front support 11.

[0060] In this embodiment, if Figure 1 to Figure 3As shown, the linkage mechanism further includes a rear support link 15, one end of which is rotatably connected to the rear support 12, the other end of the push rod link 16 is rotatably connected to the other end of the rear support link 15, and the front support link 14 is rotatably connected to the rear support link 15. In this way, when the baby stroller is folded or unfolded, when the push rod 13 rotates, the linkage mechanism can drive the front support 11 and the rear support 12 to rotate relative to each other, so that the front support 11 and the rear support 12 are moved closer to or farther away from each other.

[0061] Specifically, Figure 1 to Figure 3 As shown, the front support link 14 includes a first rod 141 and a second rod 142, and one end of the first rod 141 and the second rod 142 intersects. When the stroller is in the unfolded state, the first rod 141 extends in the front-to-back direction, and the second rod 142 extends in the up-down direction. The first rod 141 and / or the second rod 142 are rotatably connected to the front support 11 through the third shaft 403. In this embodiment, the intersection of the first rod 141 and the second rod 142 is rotatably connected to the front support 11 through the third shaft 403. The other end of the first rod 141 is rotatably connected to the rear support link 15 through the fourth shaft 404, and the other end of the second rod 142 is rotatably connected to the front part of the seat 21 through the eleventh shaft 411.

[0062] One end of the rear support link 15 is rotatably connected to the rear support 12 via the fifth shaft 405. One end of the push rod link 16 is rotatably connected to the lower portion of the push rod 13 via the sixth shaft 406, and the other end of the push rod link 16 is rotatably connected to the other end of the rear support link 15 via the seventh shaft 407. One end of the seat link 31 is rotatably connected to the seat 21 via the twelfth shaft 412, and the other end of the seat link 31 is rotatably connected to the push rod link 16.

[0063] like Figure 1 to Figure 3 As shown, when the stroller is in the unfolded state, the front support link 14 and the rear support link 15 both extend in the front-to-back direction and are supported between the front support 11 and the rear support 12. On the rear support link 15, the seventh shaft 407, the fourth shaft 404 and the fifth shaft 405 are sequentially arranged from front to back. The other end of the seat link 31, the rear support link 15 and the push rod link 16 are coaxially connected for rotation via the seventh shaft 407.

[0064] In this way, a four-bar linkage is formed between the front bracket 11, the rear bracket 12, the rear bracket connecting rod 15 and the front bracket connecting rod 14, a four-bar linkage is formed between the rear bracket 12, the push rod 13, the push rod connecting rod 16 and the rear bracket connecting rod 15, and a four-bar linkage is formed between the seat 21, the front bracket connecting rod 14, the rear bracket connecting rod 15 and the seat connecting rod 31. When the push rod 13 rotates during the folding or unfolding of the child stroller, the push rod connecting rod 16 and the rear bracket connecting rod 15 are driven to rotate by the four-bar linkage between the rear bracket 12, the push rod 13, the push rod connecting rod 16 and the rear bracket connecting rod 15, so that the front bracket connecting rod 14 is driven to move by the four-bar linkage between the front bracket 11, the rear bracket 12, the rear bracket connecting rod 15 and the front bracket connecting rod 14, so that the front bracket 11 rotates relative to the rear bracket 12. The seat 21 is driven to rotate by a four-bar linkage among the seat 21 , the front support link 14 , the rear support link 15 and the seat link 31 .

[0065] like Figure 1 to Figure 3 As shown, the stroller frame may further include a basket rod 17, one end of which is rotatably connected to the rear support connecting rod 15 via an eighth shaft 408. By providing the basket rod 17, a cloth cover may be provided on the basket rod 17, so that the cloth cover may be used to place articles when the stroller is in use.

[0066] The stroller frame further includes a basket connecting rod 18, one end of which is rotatably connected to the basket rod 17 via a ninth shaft 409, and the other end of the basket connecting rod 18 is rotatably connected to the rear support 12 via a tenth shaft 410. In this way, a four-bar linkage is formed between the rear support 12, the rear support connecting rod 15, the basket rod 17 and the basket connecting rod 18, so that when the child stroller is folded or unfolded, when the rear support connecting rod 15 rotates, the basket rod 17 can be driven to rotate synchronously to achieve folding or unfolding.

[0067] like Figure 1 to Figure 3 As shown, the stroller frame may further include a push handle 19, the lower portion of which is rotatably connected to the upper portion of the push rod 13. In this way, when the stroller is folded, the push handle 19 can be rotated to be close to the push rod 13, thereby reducing the structural volume of the folded stroller.

[0068] The backrest 22 can be configured as an integral structure or a split structure, that is, the backrest 22 is composed of a plurality of unit backrests, the plurality of unit backrests are sequentially arranged along the height direction of the backrest 22, and the adjacent ends of two adjacent unit backrests are connected by rotation or sliding.

[0069] In this embodiment, when the stroller is folded, the seat 21 flips backward, so that the height of the connection between the seat 21 and the backrest 22 is reduced. If the backrest 22 is set as an integral structure, the lower part of the backrest 22 will extend below the rear wheel assembly 92, making the structure volume of the stroller larger after folding, and it is not convenient to place the folded stroller. Based on this, in this embodiment, the backrest 22 adopts a split structure. When the stroller is folded, the backrests of each unit can rotate or slide close to each other, thereby reducing the height of the backrest 22, so that the backrest 22 will not extend below the rear wheel assembly 92 after the stroller is folded.

[0070] The child stroller further comprises a first locking mechanism, which is arranged on the stroller frame to lock the stroller frame in the unfolded state.

[0071] The first locking mechanism may be disposed between the front bracket 11 or the rear bracket 12 and the push rod 13. Specifically, Figure 6 to Figure 9 As shown, the first locking mechanism includes a first locking member 5 and a first locking groove 122 matched with the first locking member 5. The first locking member 5 is movably arranged on one of the front bracket 11 or the rear bracket 12 and the push rod 13, and the first locking groove 122 is arranged on the other of the front bracket 11 or the rear bracket 12 and the push rod 13. When the first locking mechanism is in a locked state, the first locking member 5 is positioned in the first locking groove 122, thereby locking the child stroller in the unfolded state, as shown in FIG. Figure 6 and Figure 7 When the first locking mechanism is in the unlocked state, the first locking member 5 is disengaged from the first locking groove 122, and the stroller frame can be folded. Figure 8 and Fig. 9 shown.

[0072] In this embodiment, the first locking member 5 is slidably disposed on the push rod 13, and the first locking groove 122 is disposed on the rear bracket 12. Figure 6 to Figure 9 shown.

[0073] The first locking mechanism further includes a first elastic member (not shown in the figure), one end of which is arranged on the first locking member 5, and the other end of which is arranged on the push rod 13. When the push rod 13 rotates relative to the rear bracket 12 to the position of the first locking member 5 corresponding to the position of the first locking groove 122, the first locking member 5 can slide under the elastic force of the first elastic member, so that the first locking member 5 is inserted into the first locking groove 122.

[0074] The child stroller further comprises a second locking mechanism, which is arranged between the push rod 13 and the push handle 19 to lock the relative position of the two.

[0075] In this embodiment, when the stroller is in the unfolded state and the folded state, the second locking mechanism is in the locked state, and the push handle 19 cannot rotate relative to the push rod 13. Only when the second locking mechanism is unlocked, the push handle 19 can rotate relative to the push rod 13 to get closer to the push rod 13, or move away from the push rod 13.

[0076] like Figure 6 to Figure 9 As shown, the second locking mechanism includes a second locking member 6 and a second locking groove 131 matched with the second locking member 6. The second locking member 6 is movably arranged on one of the push rod 13 and the push handle 19, and the second locking groove 131 is arranged on the other of the push rod 13 and the push handle 19. When the second locking mechanism is in a locked state, the second locking member 6 is positioned in the second locking groove 131, thereby locking the relative position of the push handle 19 and the push rod 13, as shown in FIG. Figure 6 and Figure 8 When the second locking mechanism is in the unlocked state, the second locking member 6 is disengaged from the second locking groove 131, and the push handle 19 can rotate relative to the push rod 13, as shown in FIG. Figure 7 and Fig. 9 shown.

[0077] Specifically, the second locking member 6 is provided with a locking portion 61. When the second locking mechanism is in a locked state, the locking portion 61 is inserted into the second locking groove 131. When the second locking mechanism is in an unlocked state, the locking portion 61 is disengaged from the second locking groove 131. Figure 6 to Figure 9 shown.

[0078] like Figure 6 to Figure 9 As shown, two second locking grooves 131 are provided on the push rod 13 or the push handle 19 along the circumferential direction of the rotation of the push handle 19. When the child stroller is in the unfolded state, the second locking member 6 is positioned in one second locking groove 131. When the child stroller is in the folded state, the second locking member 6 is positioned in the other second locking groove 131.

[0079] In this embodiment, the second locking member 6 is slidably disposed on the push handle 19 , and the second locking groove 131 is disposed on the push rod 13 .

[0080] The second locking mechanism further includes a second elastic member (not shown in the figure), one end of which is arranged on the second locking member 6, and the other end of which is arranged on the push handle 19. When the push handle 19 rotates relative to the push rod 13 to the position of the locking portion 61 corresponding to the position of the second locking groove 131, the second locking member 6 can slide under the elastic force of the second elastic member, so that the locking portion 61 is inserted into the second locking groove 131.

[0081] A guide structure is also provided between the second locking member 6 and the push handle 19, so as to guide the sliding of the second locking member 6 when the second locking mechanism is locked or unlocked. Figure 6 to Figure 9As shown, the guide structure includes a guide groove 192 provided on one of the push handle 19 and the second locking member 6 and a guide column 62 provided on the other, and the guide column 62 is slidably provided in the guide groove 192. In the process of driving the second locking mechanism to lock or unlock, the sliding of the second locking member 6 is guided and limited by the cooperation between the guide column 62 and the guide groove 192.

[0082] The stroller further comprises a third linkage mechanism, which is respectively connected or cooperated with the push handle 19 and the first locking mechanism, so that when the push handle 19 is rotated and brought close to the push rod 13 during the folding process of the stroller, the first locking mechanism is driven to be unlocked from the locked state. In this way, there is no need to perform a separate operation to unlock the first locking mechanism, so that the folding operation of the stroller is simple and convenient.

[0083] like Figure 6 and Figure 7 As shown, the third linkage mechanism includes a first traction rope 71 , one end of the first traction rope 71 is arranged on the first locking member 5 , and the other end of the first traction rope 71 is arranged on the push handle 19 .

[0084] The other end of the first traction rope 71 can be fixedly arranged on the push handle 19, so that when the push handle 19 starts to rotate, the first traction rope 71 pulls the first locking member 5 to slide, so that when the push handle 19 is folded into place, the first locking mechanism is unlocked. That is, when the push handle 19 is folded, its movement stroke is consistent with the sliding stroke of the first locking member 5 when the first locking mechanism is unlocked.

[0085] The other end of the first traction rope 71 can also be movably arranged on the push handle 19. In this way, the movement stroke of the push handle 19 when folding is inconsistent with the sliding stroke of the first locking member 5 when the first locking mechanism is unlocked. In this embodiment, the movement stroke of the push handle 19 when folding is greater than the sliding stroke of the first locking member 5 when the first locking mechanism is unlocked, that is, when the folding push handle 19 of the child stroller starts to rotate, the other end of the first traction rope 71 does not move, and the first locking member 5 remains stationary; when the push handle 19 rotates a certain angle, the push handle 19 continues to rotate, and the first traction rope 71 can be used to pull the first locking member 5 to slide to unlock the first locking mechanism.

[0086] Specifically, the third linkage mechanism further includes a fixed column 72, which is movably disposed on the push handle 19, and the other end of the first traction rope 71 is fixedly disposed on the fixed column 72. Figures 9 to 12 shown.

[0087] like Figure 5 As shown, the push handle 19 is provided with a first limiting groove 191, which extends along the circumferential direction of the push handle 19 rotating relative to the push rod 13, and has two oppositely disposed ends. The fixing column 72 is movably disposed in the first limiting groove 191.

[0088] When the cart frame is in an unfolded state or a folded state, there is a gap between the fixing column 72 and at least one end of the first limiting groove 191. In this embodiment, there is a gap between the fixing column 72 and one of the two ends of the first limiting groove 191, and the fixing column 72 is disposed against the other end.

[0089] When the child stroller is folded or unfolded, the push handle 19 rotates relative to the push rod 13. Since the fixed column 72 abuts against one end of the first limiting groove 191, the push handle 19 can only rotate in a single direction that makes the end of the first limiting groove 191 away from the fixed column 72. During this process, the fixed column 72 remains stationary, the first traction rope 71 and the first sliding member 5 are both stationary, and the other end of the first limiting groove 191 gradually approaches the fixed column 72. When the push rod 19 rotates a certain angle, the other end of the first limiting groove 191 abuts against the fixed column 72, so that when the push handle 19 rotates, the fixed column 72 is driven to rotate synchronously in the same direction, thereby pulling the first traction rope 71, and driving the first locking member 5 to slide through the first traction rope 71.

[0090] The push rod 13 is provided with a second limiting groove 132, and the fixing column 72 is movably disposed in the second limiting groove 132. When the stroller is in the unfolded state, the fixing column 72 is located at one end of the second limiting groove 132, and the first limiting groove 191 and the second limiting groove 132 are respectively located at opposite sides of the fixing column 72, so as to position the fixing column 72. Figure 6 When the stroller is in the folded state, the fixing post 72 is located at the other end of the second limiting groove 132, and the first limiting groove 191 and the second limiting groove 132 are also located at opposite sides of the fixing post 72, so that the fixing post 72 can also be positioned. Figure 8 shown.

[0091] The stroller also includes an unlocking mechanism, which is arranged on the stroller frame and is connected or matched with the second locking mechanism. When the second locking mechanism is in a locked state and the unlocking mechanism is operated, the second locking mechanism can be driven to unlock.

[0092] The unlocking mechanism includes an unlocking button 81 and a second traction rope 82. The unlocking button 81 is movably arranged on the component where the second locking member 6 is arranged. In this embodiment, the unlocking button 81 can be slidably arranged on the push handle 19, such as Figure 4 One end of the second pulling rope 82 is arranged on the unlocking button 81 , and the other end of the second pulling rope 82 is arranged on the second locking member 6 .

[0093] When the second locking mechanism is in the locked state, pressing the unlocking button 81 can pull the second traction rope 82, thereby pulling the second locking member 6 through the second traction rope 82 to slide relative to the push handle 19 and escape from the second locking groove 131, that is, the second locking mechanism is unlocked.

[0094] When the stroller is in the unfolded state, the first locking mechanism and the second locking mechanism are both in the locked state. In the lateral projection direction, the second rod body 142, the front bracket 11 and the seat 21 form a triangular structure, and the push rod connecting rod 16, the seat connecting rod 31 and the seat 21 form a triangular structure. Figure 1 to Figure 3 shown.

[0095] When the stroller is folded from the unfolded state, the unlocking mechanism is first operated to unlock the second locking mechanism. The push handle 19 is rotated forward to approach the push rod 13. After the push handle 19 is rotated to a certain angle, the push handle 19 continues to rotate to slide the first locking member 5. When the push handle 19 is rotated to approach the push rod 13, the first locking mechanism is unlocked, and the second locking mechanism is locked again. Fig.10 and Fig.11 As shown. The push rod 13 and the push handle 19 are rotated downward relative to the rear support 12 and are brought closer to the rear support 12. During this process, the front support 11 is driven to rotate backward and be brought closer to the rear support 12 through the linkage mechanism, and the seat 21 is moved backward and be brought closer to the front support 11 through the linkage mechanism. During this process, after the backrests of the various units rotate or slide relatively close to each other, the backrest 22 as a whole rotates downward under its own gravity and be brought closer to the rear support 12. The folding process is shown in FIG. Fig.12 and Fig.13 Until all the rods and seat mechanisms that make up the stroller frame are tightly together, and finally folded as shown. Figure 14 to Figure 16 As shown, in the folded stroller, the front frame 11, the rear frame 12, the push rod 13 and the push handle 19 are arranged in sequence from front to back, and the seat mechanism is folded between the push handle 13 and the rear frame 12. The folded stroller has a compact structure and a small size, and is easy to carry and store.

[0096] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A baby stroller, characterized in that: The invention comprises a stroller frame with an unfolded state and a folded state, the stroller frame comprises a front bracket, a rear bracket and a push rod, two of the front bracket, the rear bracket and the push rod are rotatably connected, the third is rotatably connected to any one of the two, or the three are coaxially rotatably connected; the child stroller comprises a seat and a linkage mechanism, the seat is arranged on the linkage mechanism, and the linkage mechanism is connected to the push rod, so that when the child stroller is folded and the push rod is rotated, the seat is driven to move backward and in a direction close to the front bracket.

2. The baby stroller according to claim 1, characterized in that: The linkage mechanism comprises a push rod link, a front bracket link and a seat link; one end of the push rod link is rotatably connected to the push rod; the front bracket link is rotatably connected to the front bracket, and the seat is rotatably connected to the front bracket link; one end of the seat link is rotatably connected to the seat, and the other end of the seat link is rotatably connected to the push rod link; In the unfolded state, the seat is supported by the front support link and the seat link; In the folded state, the push rod folds toward the rear support and drives the push rod connecting rod to move downward, and the push rod connecting rod drives the seat to flip backward and fold toward the front support through the seat connecting rod, and the seat drives the front support connecting rod to fold toward the front support.

3. The baby stroller according to claim 2, characterized in that: The front support connecting rod comprises a first rod body and a second rod body, one end of the first rod body and the second rod body intersect, and the seat is rotatably arranged on the second rod body; In the unfolded state, the extension direction of the second rod body intersects with the extension direction of the front bracket, and the second rod body, the front bracket and the seat form a triangular structure; In the folded state, the second rod body rotates backward and is folded close to the front bracket; the seat flips backward and is folded close to the front bracket; The other end of the push rod connecting rod is directly or indirectly rotatably arranged on the front bracket connecting rod; The first rod and / or the second rod are rotatably connected to the front bracket, the other end of the first rod is directly or indirectly rotatably connected to the push rod connecting rod, and the other end of the second rod is rotatably connected to the front part of the seat; The first rod body extends in a front-to-rear direction as a whole, and the second rod body extends in a top-to-bottom direction as a whole.

4. The stroller according to claim 2, characterized in that: In the unfolded state, the extension direction of the push rod connecting rod intersects with the extension direction of the seat connecting rod, and together with the seat, a triangular structure is formed; The front support link and the rotational position of the seat are relatively arranged at a position close to the front end of the seat, and the seat link and the rotational position of the seat are relatively arranged at a position close to the rear end of the seat.

5. The stroller according to claim 2, characterized in that: The linkage mechanism further includes a rear support link, one end of which is rotatably connected to the rear support, the other end of the push rod link is rotatably connected to the other end of the rear support link, and the front support link is rotatably connected to the rear support link; On the rear support link, the rotational connection between the push rod link and the rear support link is located in front of the rotational connection between the front support link and the rear support link; The cart frame also includes a basket rod and a basket connecting rod, wherein the basket rod is rotatably connected to the rear bracket connecting rod, one end of the basket connecting rod is rotatably connected to the basket rod, and the other end is rotatably connected to the rear bracket.

6. The stroller according to claim 1, characterized in that: The stroller also includes a seat mechanism and a backrest, the seat mechanism includes the seat, and the backrest is rotatably arranged relative to the seat; when the seat of the stroller is folded and moves backward, the connection between the seat and the backrest moves downward, the backrest is a split structure, and the backrest includes a plurality of unit backrests, the plurality of unit backrests are sequentially arranged along the height direction of the backrest, and adjacent ends of two adjacent unit backrests are rotatably or slidably connected.

7. The stroller according to claim 1, characterized in that: The cart frame also includes a push handle, which is rotatably connected to the push rod; The child stroller further comprises a first locking mechanism, which is disposed on the stroller frame to lock the stroller frame in an unfolded state; The child stroller further comprises a third linkage mechanism, which is respectively connected or matched with the push handle and the first locking mechanism, so as to drive the first locking mechanism to unlock from a locked state when the push handle rotates and approaches the push rod.

8. The stroller according to claim 7, characterized in that: The first locking mechanism comprises a first locking member movably disposed on one of the front bracket or the rear bracket and the push rod, and a first locking groove disposed on the other, wherein the first locking member is detachably disposed in the first locking groove; The third linkage mechanism comprises a first traction rope, one end of which is arranged on the first locking member, and the other end of which is arranged on the push handle; The other end of the first traction rope is movably arranged on the push handle; The third linkage mechanism also includes a fixed column, the other end of the first traction rope is fixedly arranged on the fixed column, and the push handle is provided with a first limiting groove, the first limiting groove extends along the circumferential direction of the push handle relative to the push rod, the first limiting groove has two ends arranged opposite to each other, and the fixed column is arranged in the first limiting groove; when the cart frame is in an unfolded state or a folded state, there is a gap between the fixed column and at least one end of the first limiting groove; when the push handle is rotated at an angle relative to the push rod when folded or unfolded, one end of the first limiting groove is abutted against the fixed column so that when the push handle rotates, the fixed column is driven to rotate synchronously in the same direction.

9. The stroller according to claim 8, characterized in that: The push rod is provided with a second limiting groove, and the fixing column is movably arranged in the second limiting groove; When the cart frame is in an unfolded state or a folded state, the fixing column is respectively abutted against one of the two ends of the first limiting groove and one of the two ends of the second limiting groove, and the end of the first limiting groove and the end of the second limiting groove are respectively located on opposite sides of the fixing column.

10. The baby stroller according to claim 6, characterized in that: The child stroller further comprises a second locking mechanism, which is arranged between the push rod and the push handle to lock the relative position of the two. The second locking mechanism comprises a second locking member movably disposed on one of the push rod and the push handle and a second locking groove disposed on the other, wherein the second locking member is detachably disposed in the second locking groove; And / or, two second locking grooves are provided on the push rod or the push handle along the circumferential direction of rotation of the push handle; when the child stroller is in the unfolded state, the second locking member is positioned in one of the second locking grooves; when the child stroller is in the folded state, the second locking member is positioned in the other of the second locking grooves.

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